I won’t download the file right now, but in the video the domino you are selecting has ‘Compound’ as it’s boundary mode… That’s a weird boundary mode. You surely recorded this from the game engine right? So make a video with the physics on in the game engine… Then I’ll be able to see what the object is hitting against, because really, it might just be a vertex.
Btw, to also make it fast change compound to box, because dominoes are just rectangular prisms with stuff to make it look good. If you subsurf it you making it smoother, and all you really need to get a domino reaction is with box. To do this on all of them at once… Select one domino, change the boundary to ‘box’ then select the rest of the dominoes and make sure the one that you changed is selected last, then press, Ctrl + C, a list comes up click ‘All Physical Attributes’.
Making them to box may work, but if not, make sure all the centre points, are IN the centre, if not in the ‘Edit Panel’ click ‘Centre New’ and it’ll centre the centre point in the middle of the object.
If none of that works, then I’ll download the .blend later today and check it out.